Office



Jan. 9, 1923.

G. WEBER.

BLASTING CARTRIDGE.

FILED SEPT. 27.19l9

m WM@v ATT?.

Patented Jan. 9, 11923.

, oFFicE.

GUILLAUME WEBER, F HAYVANGE, FRANCE, ASSIGNOR T0 SOCIETE LES PETITS FILS DE FRANCOIS DE WENDEL ET CIE., 0F PARIS, FRANCE. y

v BLASTING CARTRIDGE.

Application led September 27, 1919. Serial N0. 326,977.

To all whom t may concern: f

Be it known that I, GUILLAUME WEBER, citizen of the Republic of France, residing at Hayange, Lorraine, France, have invented new and useful Improvements in Blast Cartridges, of which the following is la specification.

It is well known that hydrocarbons have no absorbing power or a very lowA absorb-- ing power for liquid air and in manufacturing liquid air blast cartridges, said hydrocarbons were'heretofore mixed with an absorbing substance capable of absorbing several times its own weight of liquid air and keeping it for a certain time. Among such absorbing substances are kieselguhr, soot, cork flour, etc. Some of said substances, such as kieselguhr, which act`as an inert material have for their effect to decrease the power of the explosive and other substances, such as soot, which act as a cornbustible absorbent enhance the production of smoke.

This invention consists in a blast cartridge having a watertight envelope which contains hydrocarbons, and liquid air Without an addition of an absorbing substance.

In the accompanying drawing, given by way of' example:

Figs. l and 3 are longitudinal sections of twov modifications of a bla-st cartridge constructed in accordance with the invention;

FigQ is 'a cross section of the same along the line A-B of Fig. l; and

Fi 4 is a cross section of the same along the line C D of Fig. 3.

As shown in the drawing, the improved cartridge is composed of a water-tight rigid envelope a of cardboard or any similar 'material which contains a hydrocarbon such as naphthalene as shown at b with an addition of combustible metallic powders or not. The envelope is provided with a closing plug c hav-ing a hole through which the fuse cord c may extend. A primer may be provided. A stopper d is used to close said hole and provided with a narrow duct g,

so that when the liquid air has been introduced the evaporated air only can escape. The vhydrocarbon can bev enclosed in a satchel or bag of linen f or similar material. The sensitiveness -to shock, propulsion or friction, as well as the danger in handling the blast cartridge are reduced to aminimum, by using a. rigid envelope of cardboard or any similar material.

For the purpose of ensuring a complete combustion of thehydrocarbon, the cartridge may be only partly filled with said material and the proportion of liquid air with respect to the combustible substance may be adjusted so as to give the blast car# ,tridge a greater or lesser duration.

To the hydrocarbon such as naphthalene, l Y

paraffin wax or similarfmaterials, in a solid or liquid state, it is advantageous to further add combustible powders of metals or other 2. A blast cartridge comprising a hydroi carbon, combustible powders, liquid air, a watertight envelope made of cardboard in which said elements are enclosed without any absorbing substance.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUILLAUME WEBER.`

Witnesses:

JEAN DUMoRY, EDOUARD FABER. 

